Select the Email Archive tool from the Tool Menu of your site.

Choose the radio buttons for the settings you want to activate. You can customize the following settings:

1. Accept Messages From: allow anyone to send messages to the site email address, or allow only site participants to do so.
2. Set the reply-to address: when receiving an message from Email Archive, allow recipients to see and respond only to the site email address, or allow recipients to respond to the original sender's email address.
3. Send messages to: send email to site participants as well as archiving the messages, or archive messages without emailing the site participants.

Use the Mail Address field to change the site email address.